Hitler's bleak vision of relaxation still stands as a mostly abandoned 10,000-room resort complex.

Thousands of tourists and residents in Cologne affix "love padlocks" on the Hohenzollernbrücke Bridge to symbolize their affections.

The medieval institution is home to the precious treasure stolen in World War II in one of the greatest art thefts of the 20th century.

Tiny memorials honor individual victims of the Holocaust.

This Dresden church was purposely rebuilt Protestant after being demolished in World War II.

Cold war icon and onetime "hole" in the iron curtain.

This water-tower-turned-high-end-apartment building was once the site of an early Nazi concentration camp.

The "Prussian Versailles" that is as glorious today as when it was built.

The world's first clock to use set theory as a measure of time required the invention of a new light bulb just to maintain its obtuse measurements.

One of downtown Berlin's last reminders of its Communist past.

Once the tallest building in the world, this abandoned church is now a monument to the destruction of WWII.

In addition to fine dairy products, the world's most beautiful milk shop also offers a feast for the eyes.

Explore the complex ecology of this multifaceted nature preserve by riverboat.

The walls of Germany's Parliament still show the scars of the Red Army takeover in World War II.

A restaurant and observation deck built in a unique broadcasting antenna.

The prototype for all Nazi concentration camps.

Beneath the impressive baroque cathedral that rises from the center of Berlin lies the largest collection of Prussian royals in the world.

Berlin's old airport.

Blitzkrieg bop your way through Berlin's Ramones Museum.

Floating swimming pool within a moored vessel.

Daily jousts and dancing barrel makers in Munich's mechanical clock.

When the rain falls, this drain system turns into a musical instrument.

The bunker where Hitler took his own life is hidden under this deliberately ordinary parking lot.

On the Spree bank, discover one of the last reminders of a symbolic wall that divided, and was torn down by the people.